Grand Coteau, Louisiana has an overall humid subtropical climate, with hot and humid summers and mild to cool winters. Average temperatures range from the mid-50s to mid-70s during the winter months and from the low 80s to upper 90s in the summer. Average precipitation ranges between 30 and 40 inches a year. The area receives more rainfall than many other parts of the state, which helps keep humidity levels high throughout most of the year. Grand Coteau also experiences frequent thunderstorms during the late spring and early summer months.
Grand Coteau, Louisiana gets 63 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Grand Coteau averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 214 sunny days per year in Grand Coteau. The US average is 205 sunny days.
Grand Coteau gets some kind of precipitation, on average, 104 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 92 degrees
Winter Low: the January low is 42
Rain: averages 63 inches of rain a year
Snow: averages 0 inches of snow a year